Pt/In2S3/CdS/Cu2ZnSnS4 Thin Film as an Efficient and Stable Photocathode for Water Reduction under Sunlight Radiation

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• 作者：Feng Jiang ; Gunawan ; Takashi Harada ; Yongbo Kuang ; Tsutomu Minegishi ; Kazunari Domen ; Shigeru Ikeda
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：October 28, 2015
• 年：2015
• 卷：137
• 期：42
• 页码：13691-13697
• 全文大小：437K
• ISSN：1520-5126

文摘

An electrodeposited Cu₂ZnSnS₄ (CZTS) compact thin film modified with an In₂S₃/CdS double layer and Pt deposits (Pt/In₂S₃/CdS/CZTS) was used as a photocathode for water splitting of hydrogen production under simulated sunlight (AM 1.5G) radiation. Compared to platinized electrodes based on a bare CZTS film (Pt/CZTS) and a CZTS film modified with a CdS single layer (Pt/CdS/CZTS), the Pt/In₂S₃/CdS/CZTS electrode exhibited a significantly high cathodic photocurrent. Moreover, the coverage of the In₂S₃ layer was found to be effective for stabilization against degradation induced by photocorrosion of the CdS layer. Bias-free water splitting with a power conversion efficiency of 0.28% was achieved by using a simple two-electrode cell consisting of the Pt/In₂S₃/CdS/CZTS photocathode and a BiVO₄ photoanode.